[soliton4]

they way the puzzle is described in the article i really dont get whats the problem of a 6x6. especially after looking at the chess board 5x5. assume every number represents a different chess figure:

    1 2 3 4 5 6    21
    2 3 1 5 6 4    21
    3 1 2 6 4 5    21
    4 5 6 1 2 3    21
    5 6 4 2 3 1    21
    6 4 5 3 1 2    21

   212121212121

[tridentboy]

You've missed the fact that there are two attributes, rank and regiment. So it's something like this for a 3x3:

1A - 2B - 3C

2C - 3A - 1B

3B - 1C - 2A

[ohnoNotAgain321]

so, something like:

a6 - b2 - c4 - d3 - e2 - f1

f5 - a4 - b3 - c2 - d1 - e6

e4 - f3 - a2 - b1 - c6 - d5

d3 - e2 - f1 - a6 - b5 - c4

c2 - d1 - e6 - f5 - a4 - b3

b1 - c6 - d5 - e4 - f3 - a2

?

[taeric]

Close. Pretty sure you have to use all values for letter and number combination. For example, you don't have f2.

[tome]

You have two 2s in the second column

[soliton4]

ok thank you. after studying he article again it gets clear.